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The sun was behind me so I knew what was coming as I watched this storm move over the valley towards me on Tumamoc Hill. There was also lighning, but I did not record any of it. Eventually the rain bow made a complete arc over the city, but it was too windy and wet to attempt another Gigapan at that point.

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Tumamoc Hill is an 860 acre National Historic Landmark, research preserve, and archeological site surrounded by urban Tucson. My office is about a quarter of a mile down from the summit at the Desert Laboratory, founded in 1903, the first center for the study of deserts and the oldest continuously studied reasearch plo...

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An unusual morning Arizona monsoon storm is reflected off our neighborhood lake. Luckily the rainbow in the center peaked at the same time the GigaPan was taking the center pictures. It was not there at the beginning and was gone by the time it got to the brighter right side of the pan. The rain was still over 30 miles...